The location of the setting where you enable the single-click of icons to open them always escapes me. I can never find it when I want to change it on my Mom’s computer. Single-click irritates me, but here’s how to enable or disable it in Windows XP and Windows Vista.

3. Check the option for Single click to open an item to enable single-click to open items. Check Double-click to open item to disable the single-click feature.